Heat exchanger



FIG. 1 is a perspective view of a fan-cooled heat exchanger according to the present invention.

FIG. 2 is similar to FIG. 1 and shows with particularity a tunnel port for housing a fan motor.

FIG. 3 is a front elevational view of the heat exchanger of FIGS. 1 and 2, with the rear elevational view being a mirror image thereof.

FIG. 4 is a right-side elevational view of the present heat exchanger, with the left-side elevational view being a mirror image thereof; and,

FIG. 5 is a bottom plan view of the present heat exchanger, with the top plan view being a mirror image thereof.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a heat exchanger, as shown and described. 